Get ready. If you haven’t softened the vegan butter yet, cut it into about eight pieces and put it in your mixing bowl, giving each piece space so it will warm up. It should be at cool room temperature before you add sugar, yielding but still solid. Thaw aquafaba if needed. Set out one cookie sheet if you will be chilling the dough overnight, two cookie sheets if you will be baking all the cookies at once, or an 8×8-inch pan and a cookie sheet if you will be baking and chilling today. What?!? For best flavor, refrigerate the dough at least overnight. I often bake four cookies the day I mix the dough and refrigerate the rest. Baking and chilling. You don’t need to line the pans if they are made of light metal. If they are dark, line them with baking mat(s) or parchment paper.